## What are the rules for adding and subtracting rational numbers?

# What are the rules for adding and subtracting rational numbers?

## What are the rules for adding and subtracting rational numbers?

Rules for Adding and Subtracting Rational Numbers

- When adding rational numbers with the same sign, add their absolute values.
- To add rational numbers with different signs, subtract the lesser absolute value from the greater absolute value.
- To subtract a rational number, add its additive inverse.

## Will you always get a positive sum when you add positive and negative rational numbers?

Rule: The sum of any integer and its opposite is equal to zero. Summary: Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values.

**How do you add rational numbers with different denominators?**

There are a few steps to follow when you add or subtract rational expressions with unlike denominators.

- To add or subtract rational expressions with unlike denominators, first find the LCM of the denominator.
- Write each expression using the LCD.
- Add or subtract the numerators.
- Simplify as needed.

### What are rules for rational numbers?

A rational number is any number that satisfies the following three criteria:

- It can be expressed in the form of a simple fraction with a numerator (p) divided by a (/) a denominator (q).
- Both the numerator and the denominator must be regular integers themselves.
- The denominator (q) cannot be zero.

### Do 2 negative numbers make a positive?

When you have two negative signs, one turns over, and they add together to make a positive. If you have a positive and a negative, there is one dash left over, and the answer is negative.

**What are the rules of negative and positive numbers?**

Rules for Positive and Negative Numbers

- A positive number has a value greater than zero.
- A negative number has a value less than zero.
- The sum of a positive number and its equal negative number is zero.
- Zero is neither a positive nor negative number.

## Is the sum of two negative numbers negative?

The sum of two negative numbers is always negative, hence, this is the right choice. As for the other choices: The product or quotient of two negative numbers is always positive.